In the beginning section the engineers respawn way to fast. You finish one wave and instantly a new one spawns. Same goes for the grunts. There really isn't any time to breath or play the objective. It doesn't help that the first objective is done through a process of elimination and that the target highlights are kinda hard to see.
In the second part of the mission when you are escorting the old man after you get past the two initial turrets it can be real easy to get swarmed in that chokepoint. Other than that its a cool mission and its nice to see more enemy variety.
I should specify that this is only when its 4 vs the AI. When its against the antgonist the numbers seem more manageable.
